DescriptionThe Smart Key Tracker is a great gadget to alert you when you want to forget your belongings. Pair with the app and keep it running on the back end, and once it's disconnected, the phone and key locator will ring to alert you, perfect for traveling and avoiding loss.【 Portable and convenient 】 Smart Key Finder is small in design and easy to carry. You can put it in your wallet as a wallet extractor, or you can use it with your phone as a phone extractor or other item extractor for your convenience anytime, anywhere.[Long Battery Life & Fashion] The Bluetooth key tracking device is powered by a CR2032 battery, has a standby time of more than 10 months, and can be easily replaced for long-term use. The refined and elegant exterior makes it look like a work of art.Key Locator is a great gadget to help you search and find items you've been misplacing. Simply hang it on your luggage, wallet, key chain, or pet. If you can't find the item, double click the button on the app and it will beep to help you find the item quickly and easily.[Compatibility] When you disconnect the anti-loss device on your phone, you can view the map location; Supports iOS and Android 4.3 or later (Bluetooth 4.0 required). You can download the "iSearching" app from the App store, or scan the QR code included with the manual to download the softwarespecificationSize: 50*26*10mmPower supply: Built-in CR2032 button batteryMaterial: ABSQuantity: 1The package includes:1* Bluetooth anti-loss device